Prove that if a, b ∈ n, then the supremum i. e. the least upper bound of {a, b} is the lcm(a, b).

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.  

idk

step-by-step explanation:

i agree because i see the other persons thinking is clear

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this